WO1999052214A3 - Communications device - Google Patents

Communications device Download PDF

Info

Publication number
WO1999052214A3
WO1999052214A3 PCT/IB1999/000514 IB9900514W WO9952214A3 WO 1999052214 A3 WO1999052214 A3 WO 1999052214A3 IB 9900514 W IB9900514 W IB 9900514W WO 9952214 A3 WO9952214 A3 WO 9952214A3
Authority
WO
WIPO (PCT)
Prior art keywords
oscillator
frequency
voltage
transitor
communications device
Prior art date
Application number
PCT/IB1999/000514
Other languages
French (fr)
Other versions
WO1999052214A2 (en
Inventor
Stephen W Watkinson
Original Assignee
Koninkl Philips Electronics Nv
Philips Svenska Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninkl Philips Electronics Nv, Philips Svenska Ab filed Critical Koninkl Philips Electronics Nv
Priority to JP55020999A priority Critical patent/JP2002500857A/en
Priority to EP99907802A priority patent/EP0986856A1/en
Priority to KR19997011170A priority patent/KR20010013185A/en
Publication of WO1999052214A2 publication Critical patent/WO1999052214A2/en
Publication of WO1999052214A3 publication Critical patent/WO1999052214A3/en

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00Automatic control of frequency or phase; Synchronisation
    • H03L7/06Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/183Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1203Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier being a single transistor
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1231Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1237Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
    • H03B5/124Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance
    • H03B5/1243Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance the means comprising voltage variable capacitance diodes
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03DDEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16Multiple-frequency-changing
    • H03D7/165Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00Stabilisation of generator output against variations of physical values, e.g. power supply
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L2207/00Indexing scheme relating to automatic control of frequency or phase and to synchronisation
    • H03L2207/06Phase locked loops with a controlled oscillator having at least two frequency control terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06Receivers
    • H04B1/16Circuits
    • H04B1/26Circuits for superheterodyne receivers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06Receivers
    • H04B1/16Circuits
    • H04B1/30Circuits for homodyne or synchrodyne receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Transmitters (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Superheterodyne Receivers (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A communications device, such as a one-way pager, comprises a receiver having a frequency down-conversion means for frequency converting an input signal using a local oscillator signal generated by a signal generating means, which may comprise a frequency synthesizer. The signal generating means (20) comprises a voltage controlled oscillator (VCO)(50) including an oscillator transitor (68) coupled to dc voltage source (54), frequency determining reactive elements coupled to the oscillator transistor (68) for determinining the frequency to be generated, at least one of the reactive elements (80) being adjustable in response to an applied voltage and means (82, 84) for phase modulating the oscillator transitor (68) in an opposite sense to that caused by voltage perturbations due to noise in the dc voltage supplied by the dc voltage source (54).
PCT/IB1999/000514 1998-04-02 1999-03-25 Communications device WO1999052214A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP55020999A JP2002500857A (en) 1998-04-02 1999-03-25 Communication device
EP99907802A EP0986856A1 (en) 1998-04-02 1999-03-25 Communications device
KR19997011170A KR20010013185A (en) 1998-04-02 1999-03-25 Communications device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9807052.7 1998-04-02
GBGB9807052.7A GB9807052D0 (en) 1998-04-02 1998-04-02 Communications device

Publications (2)

Publication Number Publication Date
WO1999052214A2 WO1999052214A2 (en) 1999-10-14
WO1999052214A3 true WO1999052214A3 (en) 2000-02-24

Family

ID=10829718

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1999/000514 WO1999052214A2 (en) 1998-04-02 1999-03-25 Communications device

Country Status (8)

Country Link
US (1) US6271737B1 (en)
EP (1) EP0986856A1 (en)
JP (1) JP2002500857A (en)
KR (1) KR20010013185A (en)
CN (1) CN1266554A (en)
GB (1) GB9807052D0 (en)
TW (1) TW437153B (en)
WO (1) WO1999052214A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4110668B2 (en) * 1999-05-13 2008-07-02 松下電器産業株式会社 Signal generator
US7519333B2 (en) * 2000-07-03 2009-04-14 Texas Instruments Incorporated Radio architecture for use with frequency division duplexed systems
KR100617139B1 (en) 2004-12-07 2006-08-31 엘지전자 주식회사 A frequency direct conversion receiver for a mobile telecommunication device and a direct conversion method using the device
US8981862B2 (en) 2012-09-13 2015-03-17 Qualcomm Incorporated Cancelling supply noise in a voltage controlled oscillator circuit
CN105429598A (en) * 2015-11-18 2016-03-23 中国电子科技集团公司第三十八研究所 Low cross-modulation microwave down frequency conversion module
US10873486B1 (en) * 2020-01-23 2020-12-22 Goodix Technology Inc. Receiver circuits with blocker attenuating RF filter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5101178A (en) * 1990-03-27 1992-03-31 Nec Corporation Crystal oscillator having frequency adjustment responsive to power supply voltage
EP0601515A1 (en) * 1992-12-07 1994-06-15 Nec Corporation Oscillation circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074209A (en) * 1976-12-13 1978-02-14 Rca Corporation Wide range frequency modulation of narrow loop bandwidth phase-locked oscillators
JPS622813Y2 (en) * 1979-07-20 1987-01-22

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5101178A (en) * 1990-03-27 1992-03-31 Nec Corporation Crystal oscillator having frequency adjustment responsive to power supply voltage
EP0601515A1 (en) * 1992-12-07 1994-06-15 Nec Corporation Oscillation circuit

Also Published As

Publication number Publication date
TW437153B (en) 2001-05-28
CN1266554A (en) 2000-09-13
GB9807052D0 (en) 1998-06-03
WO1999052214A2 (en) 1999-10-14
KR20010013185A (en) 2001-02-26
JP2002500857A (en) 2002-01-08
EP0986856A1 (en) 2000-03-22
US6271737B1 (en) 2001-08-07

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